Rhineland-Palatinate is one of the 16 states of the Federal Republic of Germany. It has an area of 19846 km2 (7662.6 sqmi) and about four million inhabitants. The capital is Mainz. English speakers also commonly refer to the state by its German name, Rheinland-Pfalz (-deˈʁaɪnlant ˈpfaltspron).